101142124121 has 4 divisors (see below), whose sum is σ = 107091660852. Its totient is φ = 95192587392.

The previous prime is 101142124093. The next prime is 101142124123. The reversal of 101142124121 is 121421241101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75402414025 + 25739710096 = 274595^2 + 160436^2 .

It is a cyclic number.

It is not a de Polignac number, because 101142124121 - 2²² = 101137929817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101142124093 and 101142124102.

It is not an unprimeable number, because it can be changed into a prime (101142124123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2974768340 + ... + 2974768373.

It is an arithmetic number, because the mean of its divisors is an integer number (26772915213).

Almost surely, 2^101142124121 is an apocalyptic number.

It is an amenable number.

101142124121 is a deficient number, since it is larger than the sum of its proper divisors (5949536731).

101142124121 is an equidigital number, since it uses as much as digits as its factorization.

101142124121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5949536730.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 101142124121 its reverse (121421241101), we get a palindrome (222563365222).

The spelling of 101142124121 in words is "one hundred one billion, one hundred forty-two million, one hundred twenty-four thousand, one hundred twenty-one".